Nailing implement



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NAILING IM PPPPPP 'I'.

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H. MGCORNACK.- v

NAILING IMPLBMENT. y x Patented-Novi. 13, 1888.

Z 1 1 1 122,54?! .f m m l :Univar 1 1 1 1 0 .n1-1.... ,.,1 :11.511222 Il E @....Mlllll .i 0. A m uhpmm i raras HERBERT MCCORNAOK, OF MCQUEEN,ASSIGNOR OF ONE-HALF TO E. A. MCCORNAOK, OF OAK GLEN, ILLINOIS.

NAILING IMPLEMENT.

SPECIFICATION forming part of Letters Patent No. 392,963. dated November13, 1888.

Application filed May 26, 1868. Serial BT05175211.

.To all whom, it may concern:

Be it known that I, HERBERT MeConNAon, a citizen of the United States,residing at Mc- Queen, in the county of Kane and State of Illinois, haveinvented a new and useful Improvement in Nailing Implements, of whichthe following is a specification.

My invention relates to a machine or implement for facilitating theoperation of driving nails by hand.

The object of my invention is to provide a portable implement by the useof which a supply of nails may be carried and-fed by actuating thedevice to drive one at a time to the driving mechanism, and by which thenailing operation may be performed without requiring the operator tostoop or assume any other than an upright position to perform the work.

My improvement may be used to advantage in various connections in whichdriving of nails is practiced, as in nailing sidewalks, ioors, and thelike. It is especially useful for nailing shingles on roofs; and Ihaveinvented for use' with it, when applied to this particular purpose,a platform or stage, which will form the subjectief a separate futureapplication for Letters Patent, and though the stage affords aconvenient adjunct for use in connection with my improvedpnailer thelatter does not depend for its advantageous application to nailingshingles on roofs upon such particular staging.

By the employment of my machine the shingles may all be laid ready fornailing, when the operator, without stooping, may rapidly andaccurately, by carrying and actuating the implement, drive nails alongone row ata time of the shingles.

My invention consists in the general construction of my improved nailingimplement, and it further consists in details of construction andcombinations of parts.

In the drawings, Figure l is a broken side elevation of my nailingimplement; Fig. 2, a section through the feed-trough, taken on the line2 2 of Fig. l, and viewed in the directions of the arrows; Fig. 3, asection taken on the line 3 3 ofFig. 1, viewed in the direction of thearrows and showing the slot in the head at the lower end of the deviceinto which the (No model.)

feed-trough leads, Fig. 4, a broken longitudinal section of theimplement, reduced, and showing details ofits construction; Fig. 5, anenlarged view in side elevation of the lower end of the device, showing,externally, the automatic feed-controlling mechanism; Fig. 6, a sectiontaken on the line 6 of Fig. 5, viewed in the direction of the arrow andshowing the internal mechanism for controlling the feed; Fig. 7, asimilar view, broken, and showing the feed-controlling finger in theposition from which it is about to introduce a nail to the plunger; Fig.8, an enlarged longitudinal sectional view of the upper portion oftheplunger- `rod and guide therefor, and Fig.- 9 a bottom cylinder, and maybe provided at its projecting extremity with a handle, r, Fig. 4, andbelow the handle on the rod isastop',q,which, when the rod is forcedinto the cylinder in the manner and for the purpose hereinafterdescribed, strikes against the capped end p, surmounted by a rubberwasher, o,which in turn is surmonnted by a metal washer,o, the washersserving to take up the shock of the stroke of the plunger-rod inactuating the plunger, as hereinafter described. Within the cylinder Athe rod B is surrounded toward its upper portion by a spiral spring, a,compressed between and secured at its extremities to collars m and mwithin the cylinder, the former being an extension of the cap p andstationary, and the latter being secured to the rod Band movable withit, (thus forming a guida) whereby forcing the rod into the cylinder eX-tends the spring, the resilience of which, in compressing to its normalcondition, tends to force the plunger-rod upward out of theguidecylinder A.

The lower end of the cylinder A extends into a socket, Z, at one end ofa dat-sided rectangular, or substantially rectangular, oblong head, C,slotted from its base 'some distance upward along the center of one edgeor narrower side, as shown at x, the slot extending laterally into thecentral cylindrical aperture, k', which coincides with and forms adiametrically-reduced continuation of the ap- ICO erturc 7c, which inturn coincides with and forms a continuation of the bore of the cylinderA, a shoulder, m2, being thus provided between the bores 7a and k.

In the lower part of the bore of the cylinder A,and normally extendingtherefrom into the aperture or bore 7c, is a plunger-head, D',terminating in a plunger, D, narrower t-han the head, to fit the borelc', into the upper end of which it normally extends,as shown in Fig. 4,being yieldingly held from further extension into the same by means of aspiral spring, n', surrounding it, and confined between the lower end ofthe plunger-head D and shoulder m2. The lower end of the head C may beroughened, as indicated in Fig. 9.

Eis the feed-trough chute, comprising the flaring portion h, which maybe closed at one end, as shown at y, and open or slotted along itsconverging edges, which are flanged, as shown at y', and between thcflanges v/ are secured, to extend parallel to each other lengthwise ofthe part IL and beyond the same, (see Fig. 1,) plates h, secured attheir ends, one directly to the head C at one side of the slot x thereinand the other to the inner face of an car, z-, on the head C at theopposite side of the slot x, whereby the feedtrough leads into the saidslot and thus into the bore 7n.

The position of the feed-trough with relation to the cylinder A and headC may be that shown,wherein it is secured to the cylinder by the wingl1,to extend obliquely downward from the rear side of the implement andcurve at the portions of the plates h', which `extend beyond the ilaringpart h of the feed trough around to the side slot, x, in the head C, thelower edges of the plates at the curve flaring slightly outward inopposite directions to widen somewhat the space between then1,and thusprevent binding of the nails in feeding. The feed-trough may, however,occupy any other suitable position with reference to the other parts,provided it extends obliquely downward throughout its entire extent tofeed the nails by gravity to the slot w.

The ear l(shown in Fig. l) is provided near its upper end with atransverse slot, e, leading into the space between the plates 71,',adjacent to the slot x, and in the slot z is pivoted a horizontal flatlinger, F, bifurcated toward its extremity, which projects beyond theslot and Haring and slightly rounded toward its opposite extremity,which extends into and blocks the space between the plates h', beingalso provided at one corner with a curved lip, g, Figs. 6 and 7.

Gr is a bent lever fulcrumed to a side of the head C, as shown atf,Figs. 1 and 5, and ex# tending thence obliquely downward between theprongs of the bifurcated finger F, and beyond the fulcrum the lever G isslotted, as shown at s, and extends, normally, obliquely upward around apin, e, which projects from the plunger-head D through a vertical slot,

.3', in the side of the head C. Normally the pin e is at the upperextremities of the slots s and s', Abeing so maintained by the spring n.Opposite the upper portion of the slot w the bore kin the head Gishollowed out,as shown at t, and inthe hollow 't is a light spring, d,normally extending into the path of the plunger D and serving a purposehereinafter described.

The implement is used as follows: The chute E is supplied with nails Hby dropping them into it-,when they extend, being guided by the flaringsides ci' the trough at their shanks, through the space between theplates h', being supported at their heads, which extend across the slotin the base of the flaring portion h and, beyond the latter, across theupper edges of the plates h. When the feed-trough is filled, the nailsextend from the closed end y to the nger F, which is normally in theposition shown in Fig. 6. Theirnplemcnt is then held by the operator inthe manner of holding a broom, with one hand grasping the handler. Byforcing the rod i3 downward it strikes the plungerhead D', therebyforcing the plunger to extend at its extremity to that of the bore 7c',(the length of the stroke being gaged by the distance between the collarq and washer o,) and when a nail is in line with the plunger driving itinto the object (shingle or the like) to be nailed. The first time ofactuating the plungcrin the manner described, however, does not operateto bring the nail into position to be driven by it, since to start allthe nails are on the same side of the finger F while the latter is inthe position shown in Fig. 6, and thus barred from entering the slot 0r.The downward Vstroke of the plunger turns (through the medium of the pinc, working in the slot s of the lever G) the finger F to the positionshown in Fig. 7, wherein, though still operating to hold back the nails,it is ready, in reassnming the position shown in Fig. 6 by thereturn-stroke of the rod B and plunger, (produced by the resilientaction of the springs a and n,) to cause the lip g to engage with thenail at the end of the series or supply and admit it, by gravity, owingto the incline of the feed-trough, through the slot :r into the' borek', With its head in line with the plunger D. The position last assumedby the finger F obviously stops the nails behind it. The nail thusadmitted to the bore 7c' is prevented from falling lengthwise throughthe latter by the light spring d, which, however, isremoved by theplunger, which presses it into the hollow tin its downward stroke, andthe spring d, besides arresting a nail as it enters the bore from thechute, performs the further function of adjusting it to a verticalposition or into line with the plunger in case it shall enter the boreat an angle from the vertical. Each downward stroke of the plunger afterthe first thus drives a nail, and its upward stroke actuates the fingerF to admit automatically another nail from the feed-trough to theplunger chamber or bore la. Nailing, as will thus be seen, may, by theuse of the implement, be carried on nnintcrruptedly by merely moving thenailer on or over the object to be nailed in the line on which nails areto be driven and actuating the plunger from thehandle fr. The onlystoppage occasioned is by the exhaustion of the supply of nails in thefeed-trough, requiring it to be replenished; but if the replenishing beattended to by an assistant of the operator there need be nointerruption so far as the capability of continued action of theimplement is concerned.-

Though I employ, for want of a better term to denote it in thedescription and claims, the term cylinder77 to designate the guide forthe plunger, I do not intend thereby to confine myself to a cylindricalform for the part, as the latter may be of any suitable shape. It isalso quite obvious that the rod B and plunger may be integral, thoughsuch a construction is not so desirable as that shown, and otherchanges, such as would suggest themselves to those skilled in the art towhich. my invention relates, may be made in the details of constructionwithout departing from the spirit of myinvention.

It may be added thatin case it shall be found advisable to cap thecurved portion of the slot between the plates h', this may be done toprevent any tendency of the nails to become displaced by the pressure ofthe nail-supply behind them and jarringin the operation of th implement.4

What I claim as new, and desire to secure by Letters Patent,` is- 1. Ina hand nailing implement, the combination of ahollow cylinder, A,terminating in a head, C, having bores 7i: and k', separated by ashoulder, mi, and a slot, x, extending into the bore k', a springplunger-rod, B, in the cyln inder A, a spring-plunger, D, in the bore 7cand extending into the bore 7c', and provided with a plunger-head, D',below theplunger-rod B,a chute,E, communicating with the slot w belowthe lower end of the plunger, with the latter in its normal position,and a spring, d, in a concavity, t, in the bore 7c and normallyextending into the path of the plunger, substantially as described.

2. In a hand nailing implement, the combination of a cylinder having abore containing a reciprocating plunger, an inclined feedtrough, E,leading into the bore, a pivotal iinger, F, bifurcated toward one endand provided with a lip, g, at its opposite end, which extends acrossthe feed-passage, a pivotal slotted bent lever, G, engaging toward oneend with the finger, and a pin, e, extending from the plunger through aslot in the cylinder and engaging with the slot in the lever G, substantially as described.

3. A hand nailing implement comprising, in combination, a cylinder, A, areciprocating spring-plunger in the cylinder, a plunger-rod, B, in thecylinder and extending beyond the same, a spring, d, extending normallyinto the path of the plunger, an inclined feed-trough, E, a pivotalfinger, F, provided with a lip, g, extending across the feed-passage,and a pivotal lever, G, engaging with the finger and actuated from thereciprocating plunger, substantiall y as described HERBERT MOCORNACK.

In presence of- E. A. MCCORNACK, J. W. DYRENFORTH.

